Happy holidays etc… well, I long have cooled down my mania of putting inks into every barrel even if not designed for it. This follows my own revelation on this board a few years back that a cartridge is an eyedropper (or blunted syringe) filled object with air insulation around it to prevent pen from burping and other bad ED behaviors (you see what I did there?).
Anyway, I am happy to use it as it was designed to be….
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